Effects of low temperature stress on ferritin or aldose reductase overexpressing transgenic tobacco plants

Attila Hegedus, Sára Erdel, Tibor Janda, József Szalai, Dénes Dudits, Gábor Horvát

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The alfalfa ferritin overproducing CaMVF9 transgenic tobacco and the alfalfa aldose reductase overexpressing ALR1/9 line showed higher Fv/Fm ratios than SR1 plants during ROS generating low temperature stress. The chlorophyll content of CaMVF9 and ALR1/9 lines proved to be much more favourable than that of SR1 plants whereas there was no difference in the electrolyte leakage. Activities of all the tested antioxidant enzymes (POD, CAT, APX, GR, GST) in the leaves were significantly higher in CaMVF9 and ALR1/9 lines, the malondialdehyde content was significantly lowered in the transgenic lines. The antioxidant enzyme systems induced through several redox-signalling mechanisms have simultaneously contributed to the greater tolerance of CaMVF9 and ALR1/9 lines.

Original languageEnglish
Pages (from-to)97-98
Number of pages2
JournalActa Biologica Szegediensis
Volume46
Issue number3-4
Publication statusPublished - Jan 1 2002

Keywords

  • Aldose reductase
  • Antioxidant enzymes
  • Ferritin
  • Low temperature photoinhibition
  • Reactive oxygen species
  • Stress tolerance

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

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